[应用预成金属冠修复乳磨牙大面积缺损的临床疗效]
[Clinical effect of treatment of primary molar teeth with extensive defect using prefabricated metal crowns].
作者信息
Chi Zheng-bing, Feng Xi-ping
机构信息
Department of Preventive & Pediatric Dentistry, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China.
出版信息
Shanghai Kou Qiang Yi Xue. 2006 Aug;15(4):441-3.
PURPOSE
To observe the clinical effect of treatment of primary molar teeth with extensive defect using prefabricated metal crowns (PMCs).
METHODS
66 cases, 73 primary molar teeth with extensive defect (class I-III), which can not be repaired by amalgam restoration efficiently, were treated by means of PMCs, and were followed up regularly for 18 months. Chi-square test was used for statistical analysis by SPSS10.0 software package.
RESULTS
18 months after treatment,a total successful rate of 86.30% was achieved, with successful rates of 89.27%, 92.86%, 70.59% for class I-III respectively. Chi(2)=4.779, P=0.092 (P>0.05), there was no significant difference in the effect among the three types using PMCs.
CONCLUSION
The clinical effect of the treatment of primary molar teeth with extensive decay using PMCs is satisfactory. In order to enhance the successful rate, it is necessary to restore the decayed teeth prior to using PMCs, control the amount of occlusal reduction, and crimp as required to adapt to gingival margin for snug fit.
目的
观察预成金属冠（PMCs）修复大面积缺损乳磨牙的临床效果。
方法
选取66例患者共73颗大面积缺损（Ⅰ-Ⅲ类）且无法用银汞合金修复的乳磨牙，采用预成金属冠修复，并进行18个月的定期随访。使用SPSS10.0软件包进行卡方检验统计分析。
结果
治疗后18个月，总成功率为86.30%，其中Ⅰ-Ⅲ类的成功率分别为89.27%、92.86%、70.59%。χ² = 4.779，P = 0.092（P>0.05），三种类型采用预成金属冠修复的效果差异无统计学意义。
结论
预成金属冠修复大面积龋坏乳磨牙的临床效果满意。为提高成功率，在使用预成金属冠前需对患牙进行修复，控制咬合降低量，并根据需要进行压接以适应龈缘，确保密合。
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